CN112489375B - Earthquake early warning alarm for converter station and monitoring method thereof - Google Patents
Earthquake early warning alarm for converter station and monitoring method thereof Download PDFInfo
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- CN112489375B CN112489375B CN202011291823.6A CN202011291823A CN112489375B CN 112489375 B CN112489375 B CN 112489375B CN 202011291823 A CN202011291823 A CN 202011291823A CN 112489375 B CN112489375 B CN 112489375B
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/10—Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes
Abstract
The invention provides an alarm for earthquake early warning of a converter station and a monitoring method thereof, belonging to the technical field of earthquake early warning. The earthquake early warning alarm for the converter station comprises a box body, a moving mechanism, a driving mechanism and an earthquake warning mechanism. The moving mechanism comprises a first hollow pipe and a second hollow pipe, the first hollow pipe penetrates through the box body in a sliding mode, a conical head is installed at the bottom end of the first hollow pipe, and a through hole is formed in the surface of the first hollow pipe. The first hollow pipe, the second hollow pipe, the micro motor, the screw rod, the clamping plate and the elastic piece are matched, so that the seismic sensor can be buried in the soil, a pit does not need to be dug on the surface of the soil, the seismic sensor can be buried, the burying of the seismic sensor is facilitated, in addition, the conical head is additionally arranged at the bottom end of the first hollow pipe, the first hollow pipe is favorably driven into the soil, and the subsequent burying of the seismic sensor is facilitated.
Description
Technical Field
The invention relates to the field of earthquake early warning, in particular to an alarm for earthquake early warning of a converter station and a monitoring method thereof.
Background
The earthquake early warning means that after an earthquake happens, before earthquake waves are transmitted to a fortification area, an alarm is sent to the fortification area in advance for several seconds to tens of seconds so as to reduce local loss. An earthquake early warning device is adopted in the converter station to early warn the earthquake.
The existing earthquake early warning alarm consists of three parts, namely an inductor, a central control processing unit and an alarm unit, wherein the inductor is used for inducing earthquake signals and transmitting the signals to the central control processing unit, the central control processing unit decodes and analyzes the received signals and then compares the signals with a preset threshold value, when the signals reach or exceed the threshold value, the central control processing unit can control the alarm unit to start, so that the alarm unit gives out sound, light and other alarms, the inductor is usually buried in an old soil layer of soil, and in the burying process of the inductor, a pit needs to be dug on the surface of the soil, so that the operation is complex and the burying of the inductor is not facilitated.
Disclosure of Invention
In order to make up for the defects, the invention provides an earthquake early warning alarm of a converter station and a monitoring method thereof, aiming at solving the problem that the traditional earthquake early warning alarm equipment is inconvenient to bury a sensor.
The invention is realized in the following way:
in a first aspect, the invention provides an earthquake early warning alarm for a converter station, which comprises a box body, a moving mechanism, a driving mechanism and an earthquake warning mechanism.
The moving mechanism comprises a first hollow tube and a second hollow tube, the first hollow tube penetrates through the box body in a sliding mode, a conical head is installed at the bottom end of the first hollow tube, a through hole is formed in the surface of the first hollow tube, the second hollow tube penetrates through the through hole in a sliding mode, one end of the second hollow tube is provided with two clamping plates oppositely, the clamping plates are connected with the second hollow tube in a rotating mode, a first telescopic piece is hinged to the surface of each clamping plate, the other end of the first telescopic piece is hinged to the second hollow tube, the driving mechanism comprises a micro motor and a lead screw, the micro motor is fixed in the first hollow tube, the lead screw is installed in the first hollow tube in a rotating mode, an output shaft of the lead screw is in transmission connection with an output shaft of the micro motor, the second hollow tube is in threaded connection with the lead screw, the earthquake alarming mechanism comprises an earthquake sensor and a buzzer, the earthquake sensor is electrically connected with the buzzer through a central control machine, the earthquake sensor is arranged in the first hollow tube in a sliding mode, one end of the earthquake sensor is located between the two clamping plates, an elastic piece is installed at the other end of the earthquake sensor and touches the first hollow tube.
In an embodiment of the present invention, the first hollow tube is vertically disposed, an upper end of the first hollow tube slidably penetrates through the box body, and a lower end of the box body is hollow.
In an embodiment of the present invention, a second telescopic member is fixed on the surface of the box body, and the second telescopic member is arranged in parallel with the first hollow tube, a rammer is arranged above the first hollow tube, and the rammer is fixedly connected with a moving end of the second telescopic member.
In one embodiment of the invention, a protrusion is arranged on the surface of the clamping plate, and one side of the protrusion is attached to the seismic sensor.
In one embodiment of the invention, the output shaft of the micro motor and the screw rod are both in key connection with gears, and the gears are in meshing connection.
In an embodiment of the present invention, a guide rod is fixed inside the first hollow tube, the guide rod is parallel to the screw rod, a sliding sleeve is slidably sleeved on a rod body of the guide rod, and the sliding sleeve is fixedly connected with the second hollow tube.
In an embodiment of the present invention, a signal output end of the seismic sensor is electrically connected to a signal input end of the central control machine, and an electrical control output end of the central control machine is electrically connected to an electrical control input end of the buzzer.
In a second aspect, the present invention further provides a method for monitoring earthquake early warning of a converter station, including the following steps:
s1, installing a seismic sensor in the area range of a converter station;
s2, detecting vibration in the occupied area range of the converter station by the seismic sensor, and outputting a detected vibration signal to a central control machine;
s3, the central control machine decodes and analyzes the received signal, and when the central control machine judges that the vibration signal reaches or exceeds a set threshold value, the central control machine sends a control signal to the buzzer;
and S4, the buzzer receives the control signal, starts and gives out sound alarm to achieve the aim of earthquake early warning.
In one embodiment of the invention, the central control machine and the buzzer are installed in a monitoring room of the converter station.
In one embodiment of the invention, the seismic sensors are provided in plurality, and the plurality of seismic sensors are evenly distributed around the converter station.
The invention has the beneficial effects that: when the earthquake early warning alarm and the monitoring method thereof for the convertor station are used, the first hollow pipe is driven into soil, the second hollow pipe is driven by the micro motor to move, the second hollow pipe, the clamping plate and the earthquake sensor are moved to the outside of the first hollow pipe, then the corresponding clamping plate is supported by the first telescopic piece to rotate, so that the two clamping plates do not clamp the earthquake sensor any more, then the second hollow pipe is moved back into the first hollow pipe, and the second hollow pipe and the earthquake sensor can be separated under the support of the elastic piece, so that the earthquake sensor can be buried in the soil, a pit groove does not need to be dug on the surface of the soil, the earthquake sensor can be buried, the burying of the earthquake sensor is facilitated, in addition, a conical head is additionally arranged at the bottom end of the first hollow pipe, the first hollow pipe is driven into the soil, and the subsequent burying of the earthquake sensor is facilitated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of an alarm for earthquake early warning of a converter station and a monitoring method thereof according to an embodiment of the invention;
FIG. 2 is a schematic view of the internal structure of a first hollow tube according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the structure A in FIG. 2 according to an embodiment of the present invention;
fig. 4 is a block diagram of electrical connections provided by an embodiment of the present invention.
In the figure: 100-a box body; 110-a second telescoping member; 120-a ram; 200-a moving mechanism; 210-a first hollow tube; 220-a second hollow tube; 230-a cone head; 240-through holes; 250-a clamping plate; 251-a projection; 260-a first telescoping member; 300-a drive mechanism; 310-a micro motor; 320-a screw rod; 330-gear; 340-a guide bar; 350-a sliding sleeve; 400-earthquake warning mechanism; 410-seismic sensors; 420-a buzzer; 430-a central control machine; 440-resilient member.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive efforts based on the embodiments of the present invention, are within the scope of protection of the present invention.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
Examples
Referring to fig. 1 to 3, the present invention provides an earthquake early warning alarm for a converter station, which includes a box 100, a moving mechanism 200, a driving mechanism 300, and an earthquake warning mechanism 400.
The moving mechanism 200 is arranged inside the box body 100, the earthquake alarm mechanism 400 is arranged inside the moving mechanism 200, and the driving mechanism 300 is used for driving the moving mechanism 200 to move, so that the earthquake alarm mechanism 400 moves, and the burying of the earthquake alarm mechanism 400 is facilitated.
Referring to fig. 1-3, the moving mechanism 200 includes a first hollow tube 210 and a second hollow tube 220, the first hollow tube 210 slidably penetrates through the box 100, a conical head 230 is installed at a bottom end of the first hollow tube 210, a through hole 240 is formed in a surface of the first hollow tube 210, the second hollow tube 220 slidably penetrates through the through hole 240, two clamping plates 250 are oppositely disposed at one end of the second hollow tube 220, the clamping plates 250 are rotatably connected with the second hollow tube 220, a first telescopic member 260 is hinged to a surface of the clamping plate 250, and the other end of the first telescopic member 260 is hinged to the second hollow tube 220.
In this embodiment, the first hollow tube 210 is vertically disposed, the upper end of the first hollow tube 210 slidably penetrates through the box body 100, the lower end of the box body 100 is hollow, which is beneficial to the movement of the first hollow tube 210, and in addition, the first hollow tube 210 may be a prismatic tube; the second telescopic part 110 is fixed on the surface of the box body 100, the second telescopic part 110 is arranged in parallel with the first hollow pipe 210, the rammer 120 is arranged above the first hollow pipe 210, the rammer 120 is fixedly connected with the moving end of the second telescopic part 110, the rammer 120 can move by the telescopic action of the second telescopic part 110, the rammer 120 can strike the first hollow pipe 210, and the first hollow pipe 210 can be driven into the soil, and it should be noted that the first telescopic part 260 and the second telescopic part 110 can be any one of an air cylinder, an electric cylinder and an electric push rod; the surface of the clamping plate 250 is provided with a protrusion 251, one side of the protrusion 251 is attached to the seismic sensor 410, and the protrusion 251 is additionally arranged, so that the clamping plate 250 can be used for clamping the seismic sensor 410;
it should be noted that the joint of the holding plate 250 and the second hollow tube 220, the joint of the first telescopic member 260 and the holding plate 250, and the joint of the first telescopic member 260 and the second hollow tube 220 are all provided with a hinge seat.
Referring to fig. 1-2, the driving mechanism 300 includes a micro motor 310 and a lead screw 320, the micro motor 310 is fixed in the first hollow tube 210, the lead screw 320 is rotatably installed in the first hollow tube 210, an output shaft of the lead screw 320 is in transmission connection with an output shaft of the micro motor 310, the second hollow tube 220 is in threaded connection with the lead screw 320, in specific implementation, the micro motor 310 is started, the micro motor 310 can drive the lead screw 320 to rotate, the second hollow tube 220 can move along the lead screw 320, the second hollow tube 220 can move to the outside of the first hollow tube 210 through the through hole 240, and then the clamping plate 250 and the seismic sensor 410 can move to the outside of the first hollow tube 210, the first telescopic member 260 is regulated and controlled to support the clamping plate 250 to rotate, so that the clamping plate 250 is separated from the seismic sensor 410, and then the second hollow tube 220 is driven by the micro motor 310 to move back to the first hollow tube 210, and the second hollow tube 220 is separated from the seismic sensor 410 under the support of the elastic member 440, so that the seismic sensor 410 can be buried in the soil.
It should be noted that the micro motor 310 may be a servo motor, and the output shaft of the micro motor 310 may rotate forward and backward, and a bearing is disposed at the connection position of the screw rod 320 and the first hollow tube 210;
in this embodiment, the output shaft of the micro motor 310 and the lead screw 320 are both keyed with the gear 330, and the gears 330 are engaged and connected, and the arrangement of the gear 330 makes the transmission between the output shaft of the micro motor 310 and the lead screw 320 more stable; the guide rod 340 is fixed inside the first hollow tube 210, the guide rod 340 is parallel to the lead screw 320, the shaft of the guide rod 340 is slidably sleeved with the sliding sleeve 350, the sliding sleeve 350 is fixedly connected with the second hollow tube 220, in the moving process of the second hollow tube 220, the sliding sleeve 350 can move along the guide rod 340, and the guide rod 340 limits the moving range of the sliding sleeve 350, so that the moving range of the second hollow tube 220 can be limited, and the second hollow tube 220 can move more stably.
Referring to fig. 1-2, the earthquake alarm mechanism 400 includes an earthquake sensor 410 and a buzzer 420, the earthquake sensor 410 is electrically connected to the buzzer 420 through a central control unit 430, the earthquake sensor 410 is slidably disposed in the first hollow tube 210, one end of the earthquake sensor 410 is located between the two clamping plates 250, an elastic member 440 is mounted at the other end of the earthquake sensor 410, the other end of the elastic member 440 touches the inner wall of the first hollow tube 210, in the specific implementation, the elastic member 440 is used for supporting the earthquake sensor 410, and the elastic member 440 is a spring.
In this embodiment, the signal output terminal of the seismic sensor 410 is electrically connected to the signal input terminal of the central control unit 430, the electrical control output terminal of the central control unit 430 is electrically connected to the electrical control input terminal of the buzzer 420, and the central control unit 430 is used for receiving and transmitting signals and analyzing data.
Referring to fig. 1 and 4, in particular, the embodiment further provides a monitoring method for earthquake early warning of a converter station, including the following steps:
s1, installing a seismic sensor 410 in a floor area range of a converter station;
s2, detecting vibration in the occupied area range of the flow change station by the seismic sensor 410, and outputting a detected vibration signal to the central control machine 430;
s3, the central control machine 430 decodes and analyzes the received signal, and when the central control machine 430 judges that the vibration signal reaches or exceeds a set threshold value, the central control machine 430 sends a control signal to the buzzer 420;
and S4, the buzzer 420 receives the control signal, starts and gives out sound alarm to achieve the aim of earthquake early warning.
In specific implementation, the size of the threshold value can be determined by actual conditions; the central control machine 430 and the buzzer 420 are arranged in the monitoring room of the converter station, and are favorable for warning personnel in the monitoring room of the converter station; the plurality of seismic sensors 410 are arranged, and the plurality of seismic sensors 410 are uniformly distributed around the converter station, so that the detection effect of seismic signals is improved.
Specifically, the structure principle of the earthquake early warning alarm of the converter station and the monitoring method thereof is as follows: when the seismic sensor 410 is buried, the box body 100 is placed on the surface of soil, the first hollow tube 210 is driven into the soil, then the micro motor 310 is started, the screw rod 320 is driven to rotate, the second hollow tube 220 moves along the screw rod 320, the second hollow tube 220 moves to the outside of the first hollow tube 210 through the through hole 240, the clamping plate 250 and the seismic sensor 410 can move to the outside of the first hollow tube 210, the first telescopic piece 260 is regulated and controlled to support the clamping plate 250 to rotate, the clamping plate 250 is separated from the seismic sensor 410, then the second hollow tube 220 is driven to move through the micro motor 310, the second hollow tube 220 is moved back into the first hollow tube 210, the second hollow tube 220 and the seismic sensor 410 are separated under the support of the elastic piece 440, so that the seismic sensor 410 can be buried in the soil, a pit does not need to be dug on the surface of the soil, the seismic sensor 410 can be buried, the burying of the seismic sensor 410 is facilitated, in addition, the bottom end 230 of the first hollow tube 210 is additionally added, the first driving into the soil is facilitated, and the burying of the seismic sensor 410 is facilitated.
It should be noted that the specific model specifications of the first extensible member 260, the second extensible member 110, the micro motor 310, the central control machine 430, the buzzer 420 and the seismic sensor 410 need to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art in the field, so detailed description is omitted.
The power supply of the first telescopic member 260, the second telescopic member 110, the micro motor 310, the central controller 430, the buzzer 420 and the seismic sensor 410 and the principle thereof will be apparent to those skilled in the art and will not be described in detail herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An earthquake early warning alarm for a converter station is characterized by comprising a box body (100), a moving mechanism (200), a driving mechanism (300) and an earthquake warning mechanism (400);
the moving mechanism 200 is arranged inside the box body 100, the earthquake alarm mechanism 400 is arranged inside the moving mechanism 200, and the driving mechanism 300 is used for driving the moving mechanism 200 to move;
the moving mechanism (200) comprises a first hollow pipe (210) and a second hollow pipe (220), the first hollow pipe (210) penetrates through the box body (100) in a sliding mode, a conical head (230) is installed at the bottom end of the first hollow pipe (210), a through hole (240) is formed in the surface of the first hollow pipe (210), the second hollow pipe (220) penetrates through the through hole (240) in a sliding mode, two clamping plates (250) are oppositely arranged at one end of the second hollow pipe (220), the clamping plates (250) are rotatably connected with the second hollow pipe (220), a first telescopic piece (260) is hinged to the surface of each clamping plate (250), and the other end of the first telescopic piece (260) is hinged to the second hollow pipe (220);
the driving mechanism (300) comprises a micro motor (310) and a screw rod (320), the micro motor (310) is fixed in the first hollow tube (210), the screw rod (320) is rotatably installed in the first hollow tube (210), an output shaft of the screw rod (320) is in transmission connection with an output shaft of the micro motor (310), and the second hollow tube (220) is in threaded connection with the screw rod (320);
the earthquake alarm mechanism (400) comprises an earthquake sensor (410) and a buzzer (420), the earthquake sensor (410) is electrically connected with the buzzer (420) through a central control machine (430), the earthquake sensor (410) is arranged in the first hollow tube (210) in a sliding mode, one end of the earthquake sensor (410) is located between the two clamping plates (250), an elastic piece (440) is installed at the other end of the earthquake sensor (410), and the other end of the elastic piece (440) touches the inner wall of the first hollow tube (210);
the seismic sensor comprises a first hollow pipe (210), a conical head (230) is additionally arranged at the bottom end of the first hollow pipe (210), the first hollow pipe (210) is driven into soil conveniently, a second hollow pipe (220) is moved into the soil conveniently, two first telescopic pieces (260) support corresponding clamping plates (250) to rotate, the two clamping plates (250) clamp a seismic sensor (410), the clamping plates (250), the second hollow pipe (220) and the seismic sensor (410) to move synchronously, a micro motor (310) drives a screw rod (320) to rotate, the second hollow pipe (220) can move along the screw rod (320), the second hollow pipe (220) moves to the outside of the first hollow pipe (210) through a through hole (240), the clamping plates (250) and the seismic sensor (410) are further moved to the outside of the first hollow pipe (210), the first telescopic pieces (260) are regulated and controlled to support the clamping plates (250) to rotate, the clamping plates (250) and the seismic sensor (410) are separated, then the second hollow pipe (220) is driven to move, the second hollow pipe (220) is separated from the seismic sensor (410), and the seismic sensor is buried under the soil elastically.
2. The earthquake early warning alarm for the converter station according to claim 1, wherein the first hollow tube (210) is vertically arranged, the upper end of the first hollow tube (210) penetrates through the box body (100) in a sliding manner, and the lower end of the box body (100) is hollowed out.
3. The earthquake early warning alarm for the converter station according to claim 1, characterized in that a second telescopic member (110) is fixed on the surface of the box body (100), the second telescopic member (110) is arranged in parallel with the first hollow tube (210), a rammer (120) is arranged above the first hollow tube (210), and the rammer (120) is fixedly connected with the moving end of the second telescopic member (110).
4. The earthquake early warning alarm for the converter station according to claim 1, characterized in that a protrusion (251) is arranged on the surface of the clamping plate (250), and one side of the protrusion (251) is attached to the earthquake sensor (410).
5. The earthquake early warning alarm for the converter station according to claim 1, wherein the output shaft of the micro motor (310) and the screw (320) are both keyed with a gear (330), and the gears (330) are in meshed connection.
6. The earthquake early warning alarm for the converter station according to claim 1, wherein a guide rod (340) is fixed inside the first hollow tube (210), the guide rod (340) and the screw rod (320) are arranged in parallel, a sliding sleeve (350) is slidably sleeved on the body of the guide rod (340), and the sliding sleeve (350) is fixedly connected with the second hollow tube (220).
7. The earthquake early warning alarm for the converter station according to claim 1, wherein a signal output end of the earthquake sensor (410) is electrically connected with a signal input end of the central control machine (430), and an electric control output end of the central control machine (430) is electrically connected with an electric control input end of the buzzer (420).
8. A monitoring method for earthquake early warning of a converter station is characterized by comprising the following steps,
the converter station earthquake warning alarm according to any of claims 1 to 7, and the following steps:
s1, installing a seismic sensor (410) in a floor area range of a converter station;
s2, detecting vibration in the occupied area range of the flow change station by using a seismic sensor (410), and outputting a detected vibration signal to a central control machine (430);
s3, the central control machine (430) decodes and analyzes the received signal, and when the central control machine (430) judges that the vibration signal reaches or exceeds a set threshold value, the central control machine (430) sends a control signal to the buzzer (420);
and S4, the buzzer (420) receives the control signal, starts and gives out sound alarm to achieve the aim of earthquake early warning.
9. The monitoring method for earthquake early warning of the converter station according to claim 8, wherein said central control machine (430) and said buzzer (420) are installed in a monitoring room of the converter station.
10. A method for monitoring a converter station earthquake early warning according to claim 8, characterized in that a plurality of said earthquake sensors (410) are provided, and a plurality of said earthquake sensors (410) are evenly distributed around the converter station.
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